21
Use of the Weighing System in Legal Metrology
in the EU
Components of a Verifiable Weighing System
Your weighing platform is a modular device. The weighing system in which this
weighing platform is connected is verifiable for use in legal metrology only if
this platform is combined with a verifiable isi industrial terminal or with a PC
running Sartorius software (“Winscale”).
The weighing platform or weighing system may not be used for weighing
goods intended for direct sale to the public, and may not be used in legal
metrology prior to the initial verification.
The type-approval certificate for verification applies to non-automatic weighing
instruments and, in Germany, to automated weighing instruments used in non-
continuous weighing with or without control functions. Thus a verified weighing
system can consist of
– an isi industrial terminal + 1 to 3 IS weighing platforms
or
– an isi industrial terminal + at least one IS weighing platform + up to 2
additional weighing instrument that have undergone EU or national verification.
The weighing instrument may not be used for weighing goods intended for
direct sale to the public. The type-approval certificate for verification applies to
non-automatic weighing instruments only; for automatic operation with or
without auxiliary devices installed, you must comply with your country’s national
regulations applicable at the place of installation of your weighing instrument.
Separate Testing and Verification of the Weighing System Components
Initial verification can be performed separately on the isi industrial terminal and
the IS weighing platform.
Verification is valid, however, only after the two instruments are connected to
one another.
You can interchange tested and verified isi industrial terminals without having to
have the equipment re-tested and re-verified. The validity of the verification is
not affected.
Effect of the Preload on Verifiability
(The preload can be changed only prior to verification!)
Only internal adjustment (calibration) is allowed for weighing instruments
verified for use in legal metrology (see “Effect of the Preload on Internal
Calibration/Adjustment”).
The preload can be changed only prior to verification.
The legal basis permitting Sartorius to perform initial verification is constituted by
the following: 1) EC council directive no. 90/384/EEC on non-automatic
weighing instruments, which has been applicable within the harmonized Single
Market of the European Union since 1 January 1993; and 2) the certificate
issued by the Metrology Department “Eichwesen” of the Landesverwaltungsamt
(administrative offices) of Lower Saxony in Germany.
Declaration of Conformity
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